English verb conjugation COULD TWIN

Regular verb: twin - twinned - twinned

Affirmation

Simple form

I could twin
you could twin
he could twin
we could twin
you could twin
they could twin

V-ing form

I could be twinning
you could be twinning
he could be twinning
we could be twinning
you could be twinning
they could be twinning

Perfect

I could have twinned
you could have twinned
he could have twinned
we could have twinned
you could have twinned
they could have twinned

V-ing perfect

I could have been twinning
you could have been twinning
he could have been twinning
we could have been twinning
you could have been twinning
they could have been twinning

Negation

Simple form

I couldn't twin
you couldn't twin
he couldn't twin
we couldn't twin
you couldn't twin
they couldn't twin

V-ing form

I couldn't be twinning
you couldn't be twinning
he couldn't be twinning
we couldn't be twinning
you couldn't be twinning
they couldn't be twinning

Perfect

I couldn't have twinned
you couldn't have twinned
he couldn't have twinned
we couldn't have twinned
you couldn't have twinned
they couldn't have twinned

V-ing perfect

I couldn't have been twinning
you couldn't have been twinning
he couldn't have been twinning
we couldn't have been twinning
you couldn't have been twinning
they couldn't have been twinning

Interrogative form

Simple form

could I twin?
could you twin?
could he twin?
could we twin?
could you twin?
could they twin?

V-ing form

could I be twinning?
could you be twinning?
could he be twinning?
could we be twinning?
could you be twinning?
could they be twinning?

Perfect

could I have twinned?
could you have twinned?
could he have twinned?
could we have twinned?
could you have twinned?
could they have twinned?

V-ing perfect

could I have been twinning?
could you have been twinning?
could he have been twinning?
could we have been twinning?
could you have been twinning?
could they have been twinning?

Interro-negative form

Simple form

couldn't I twin?
couldn't you twin?
couldn't he twin?
couldn't we twin?
couldn't you twin?
couldn't they twin?

V-ing form

couldn't I be twinning?
couldn't you be twinning?
couldn't he be twinning?
couldn't we be twinning?
couldn't you be twinning?
couldn't they be twinning?

Perfect

couldn't I have twinned?
couldn't you have twinned?
couldn't he have twinned?
couldn't we have twinned?
couldn't you have twinned?
couldn't they have twinned?

V-ing perfect

couldn't I have been twinning?
couldn't you have been twinning?
couldn't he have been twinning?
couldn't we have been twinning?
couldn't you have been twinning?
couldn't they have been twinning?

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